【摘要】 目的:探讨成功经皮冠状动脉介入治疗慢性完全闭塞病变(CTO-PCI)和左室射血分数(left ventricular ejection fraction, LVEF)恢复对CTO合并射血分数轻度降低的心力衰竭(heart failure with mildly reduced ejection fraction, HFmrEF)患者预后的影响，并探讨LVEF恢复的影响因素。方法:选取2018年1月—2019年3月于郑州大学第一附属医院就诊的CTO合并HFmrEF且接受PCI治疗的患者138例，根据CTO是否开通分为开通组(63例)和未开通组(75例)。将随访患者治疗1年后LVEF≥50%定义为LVEF恢复，收集并比较2组患者基线资料、治疗后3年内主要心脑血管不良事件(major adverse cardiac and cerebrovascular events, MACCE)发生情况，包括全因死亡、心源性死亡、非致死性心肌梗死、再次血运重建、心力衰竭再住院及脑卒中。结果:治疗3年后开通组总MACCE发生率低于未开通组(22.2%vs 46.7%,P=0.003)。Kaplan-Meier曲线显示开通组治疗后3年内总MACCE累积发生率低于未开通组(log-rank P=0.003)。多因素Cox回归分析显示CTO-PCI(HR=0.524,95%CI:0.277～0.991,P=0.047)和LVEF恢复(HR=0.498,95%CI:0.256～0.971,P=0.041)是治疗后3年内总MACCE发生的独立保护因素。多因素logistic回归显示CTO-PCI、eGFR和基线LVEF是治疗1年后LVEF恢复的独立影响因素(均P<0.05)。结论:CTO-PCI开通CTO病变和LVEF恢复的CTO合并HFmrEF患者的MACCE发生率更低，预后更好。CTO-PCI、eGFR和基线LVEF是LVEF恢复的独立影响因素。更多还原

【Abstract】 Objective: To explore the effect of the successful percutaneous coronary intervention for chronic total occlusion(CTO-PCI) and recovery of left ventricular ejection fraction(LVEF) on the prognosis of patients with CTO and heart failure with mildly reduced ejection fraction(HFmrEF), and to explore the influencing factors of LVEF recovery. Methods: A total of 138 patients with CTO combined with HFmrEF who received PCI treatment in the First Affiliated Hospital of Zhengzhou University from January 2018 to March 2019 were selected and divided into the open group(n=63) and the unopened group(n=75) according to whether the CTO lesions were opened or not. LVEF≥50% after 1 year of follow-up treatment was defined as LVEF, and the baseline data and the incidence of major adverse cardiovascular and cerebrovascular events(MACCE) within 3 years after treatment were collected and compared between the two groups, including all-cause death, cardiac death, non-fatal myocardial infarction, revascularization, heart failure rehospitalization and stroke. Results: After 3 years of treatment, the incidence of total MACCE in the open group was lower than that in the unopened group(P=0.003). The Kaplan-Meier curve showed that the cumulative incidence of total MACCE within 3 years after treatment in the open group was lower than that in the unopened group(log-rank P=0.003). Multivariate Cox regression analysis showed that CTO-PCI(HR=0.524, 95%CI: 0.277-0.991, P=0.047) and LVEF recovery(HR=0.498, 95%CI: 0.256-0.971, P=0.041) were independent protective factors for the development of total MACCE within 3 years after treatment. Multivariate logistic regression showed that CTO-PCI, eGFR and baseline LVEF were independent influencing factors of LVEF recovery after 1 year of treatment(all P<0.05). Conclusion: CTO-PCI opening CTO lesions and LVEF recovery are associated with lower MACCE incidence and better prognosis in patients with CTO and HFmrEF. CTO-PCI, eGFR, and baseline LVEF were independent factors for LVEF recovery.更多还原